Trauma management during tragic years of Lebanon part II by Professor Anis Baraka

43. UP REGULATION

92. Deep
Photodetector
Skin
Skull
Light
Emitting
Diode
Cerebral
Cortex
Surface
Photodetector
SomaSensor
Depth Resolution with
Near Infrared Spectroscopy (NIRS)
Adult SomaSensor®
Illustration of incandescent light
through human skull
The INVOS System is based on Somanetics’ proprietary
INVOS® (In Vivo Optical Spectroscopy) technology.
By placing two detectors at different distances from the
light source, two depths of penetration can be
measured. Subtracting the shallow measurement from
the deep minimizes superficial signal contamination,
and isolates changes in oxygen saturation in the brain.
This is called “depth resolution.”